From what I understand you don't have to abandoned tron because some other investors or other businesses invest into the coin million where that they can have a support in time coming so since they have invested into that court I don't think that they will abandon it any longer again because their money is into it whatever that invest into it will be seeking for the coin to grow up again so that it investment will not be liability or will not be a worst to it
As long as USDT is there, Tron will not be abandoned.
Secondly, people still believe that Tron is a good project because they still have trust in Tron founder Justin sun statements about Tron who knows exactly how to keep the hype in the market.